Based on the gridding partition and computational fluid dynamics,the flow field(velocity,pressure drop and resistance loss) of heat transfer enhancement in tube of ethylene cracking furnace with twisted slice was simulated.

A new process of intensifying heat transfer by placing several sections of short specially forged tube with twisted slices was experimentally studied and analog computed in the thesis.

The development and application of solid turbine technique and twisted blade technique are analyzedin this paper,And then the prospect of solid turbine with ring and twisted blades is also discusse

The twisted blade as an important component of the centrifugal pump,the manufacture process and the precision are importamt factors in quality of centrifugal pump.

Authors of this paper used UG technology to establish distorted blade 3 dimension models.

The double-suction centrifugal pumps with distorted blade have complicated blade shape and multi- flow channels characteristics.

Study on 3D Solid Modelling for Centrifugal Pump Blade of Impeller;

A new image-based 3D reconstruction method,which concentrates on lamina edges,growing curves and the phenomena of lamina twisting and wrapping effect,has been put forward.